scholarly journals The ratio of roughage to concentrate on milk secretion rate in goats fed Stylosanthes ha mata hay

2021 ◽  
Vol 38 (2) ◽  
pp. 18-24
Author(s):  
O. O. Shittu ◽  
O. F. Smith ◽  
O. A. Oshinowo
Keyword(s):  
Body Weight ◽  
Live Weight ◽  
Random Order ◽  
Secretion Rate ◽  
Milk Secretion ◽  
Significant Treatment ◽  
Stylosanthes Hamata ◽  
Percent Body Weight ◽  
C 30 ◽  
Concentrate Level

An experiment was conducted to evaluate the effect of roughage to concentrate ratio (R:C) on milk secretion rate (g/h) in goats using a cross-over design in which each goat passed sequentially through all the treatments in random order. The treatments (R: C) were: A = 70 percent roughage : 30 percent concentrate; B = 50 percent roughage : 50 percent concentrate e and C = 30 percent roughage : 70 percent concentrate. In the experiment, seven goats were milked once a day, from the 2nd to 8th week of lactation, thrice per week for 2 weeks per treatment. The animals were fed at 4 percent body weight (DM basis). The feed consisted of Stylosanthes hamata hay (S. hamata hay) and a 17.2 percent CP concentrate ration. Data were analysed using the treatments as main effect with live weight and week of lactation as covariates. There was no significant treatment effects on mülk secretion rate (P>0.05). Overall milk secretion rate was 5.23gh. Week of lactation also had no significant effect (P>0.05). However, live weight of doe at time of milking had a highly significant effect (P>0.001) with milk secretion rate increasing by 0.41g/h per kilogram live weight. The R2 values for the predictive mathematical relationship for goats fed Stylosanthes hamata hay at 4 percent body weight in the dry season was R2 = 0.888. It can therefore be deduced that for a ladating doe in the 5th week of lactation at 20kg body weight fed at 4 percent with Stylosanthes hamata hay to concentrate ratio at 70 percent roughage : 30 percent concentrate would give a milk secretion rate of 6.717g/h while at 50 percent roughage : 50 percent concentrate it would give 6.662 g/h and 30 percent roughage : 70 percent concentrate level would give 7.054 g/h. Keywords:,,, 

Thyroid hormone secretion rate and milk yield in lactating rats

1961 ◽  
Vol 200 (3) ◽  
pp. 483-485 ◽  
Author(s):  
Clark E. Grosvenor
Keyword(s):  
Body Weight ◽  
Thyroid Hormone ◽  
Milk Yield ◽  
Hormone Secretion ◽  
Secretion Rate ◽  
Female Rats ◽  
Milk Secretion ◽  
Maternal Body ◽  
Thyroid Secretion

Thyroid secretion rate (TSR) obtained from primiparous lactating rats during the first 14 days of lactation averaged 1.93 µg/100 gm/day l-thyroxine or 130% more than obtained from nonlactating female rats of the same age and strain. TSR was significantly correlated with the amount of milk obtained from mothers on day 14 of lactation. TSR obtained from the same rats during a second 14-day period of lactation (nursing a foster litter) was significantly reduced to an average of 0.98 µg/100 gm/day l-thyroxine. A significant reduction in milk yield on day 28 accompanied the reduction in TSR. The reduction in milk secretion during the second 14 days of lactation resulted in slower growth of the foster litters. Maternal body weight was unaltered. In a second experiment the average TSR of 2.10 µg/100 gm/day obtained during the first 14 days of lactation fell to 0.75 µg/100 gm/day during a subsequent 14-day period of nonnursing. The intensity of lactation apparently is associated with the intensity of thyroid hormone output, and inadequate thyroid hormone secretion may be an important factor in the decline of milk secretion.

THE LIVE WEIGHT GROWTH OF BULLS OF DIFFERENT BREEDS

2017 ◽  
Vol 53 ◽  
pp. 115-119
Author(s):  
A. V. Dymchuk ◽  
O. I. Lyubynskyy
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Dairy Cattle ◽  
Live Weight ◽  
Mathematical Statistics ◽  
High Quality ◽  
New Born ◽  
Black And White ◽  
Daily Average ◽  
Weight Growth

The studies of the dynamics results of body weight, absolute and daily average, relative increases averaging bulls of Ukrainian black-and-white and Ukrainian red-and-white dairy cattle. Researches are conducted in the conditions of POSP «Napadivske» Kalyinivka district of the Vinnytsya area after materials of primary pedigree account. In an economy use the whole-year of the same type feeding. In the structure of ration 40% make the concentrated sterns and also high-quality silage and soilage. Average daily increases of bulls for period of age to realization for a slaughter made over 1000 grammes. The dynamics of growth of living mass, absolute, average daily and relative increases of bulls, is analysed Ukrainian black-and-white and Ukrainian red-and-white dairy cattle. Living mass and weight gain researches of age to 12-monthly age with an interval in 3 months after the generally accepted methods. Materials of researches are worked out the methods of mathematical statistics with the use of programmatic package of Statistica 8.0. Living mass of bulls of the second group at birth made 36,3 kg, that anymore on 0,8 kg by comparison to new-born bulls of the first group. In all next periods living mass of animals of the second group was greater as compared to the animals of the same age of the first. In 3 months advantage made 1,7 kg, in 6 months – 4,6 kg (P>0,95), in 9 months – 8,8 kg (P>0,95), in 12 months – 12,5 kg (P>0,99). Difference of absolute increases of bulls of the second group above the bulls of the same age of the first of age to to 3-monthly age made 0,8 kg in behalf of animals of the second group. In a period 3-6 months a difference is after this index between the first and second groups made 2,9 kg in behalf of the last. In periods 6-9 and reliable advantage of animals of the second group is 9-12 months set above the bulls of the same age of the first on 4,1 kg (P>0,95) and 3,7 kg (P>0,95) accordingly. In a period of age to 18-monthly age absolute increases of bulls of the second group were greater by comparison to bulls first on 12,5 kg (R>0,99). Average daily increases of bulls of the second group of age to 3-monthly age made 763,0 grammes, that anymore on 8,9 grammes by comparison to bulls of the first group. In periods 3-6 months the average daily increases of animals of the second group prevailed the bulls of the same age of the first on 32,6 grammes. In a period 6-9 months the average daily increases of animals of the second group were made by 1045,9 grammes, that for certain anymore on 45,9 grammes (P>0,95) by comparison to the bulls of the same age of the first. Maximal increases of bulls were in a period 9-12 months and made 1210,4 grammes in the animals of the second group and 1168,9 grammes – for the bulls of the same age of the first, that for certain anymore on 41,5 grammes (P>0,95). In a period of age to 12-monthly age the average daily increases of bulls of the second group were made by 970,6 grammes, that was for certain anymore on 31,8 grammes (R>0,99) by comparison to the bulls of the same age of the first group. Relative increases of bulls of both groups were high. From birth to 3-monthly age greater increases had bulls of the first group – 97,8%, and in periods 3-6, 6-9 and 9-12 months greater were increases of bulls of the same age of the second group – 56,4; 40,1 and 32,4% accordingly. For all probed periods of reliable advantage it is not discovered between the compared groups. It is set researches, that at the identical terms of feeding and maintenance more rapid bulls grow Ukrainian red-and-white dairy cattle. In all age-old periods they prevailed the bulls of the same age of the Ukrainian black-and-white dairy cattle, in a that number, beginning from 9-monthly age, advantage was reliable (P>0,95–0,99). Average daily increases of bulls of two breeds were the least in a period of age to to 3-monthly age – 754,1-763,0 grammes, and most in a period 9-12 months – 1168,9–1210,4 grammes.

ПРОДОЛЖИТЕЛЬНОСТЬ И ИНТЕНСИВНОСТЬ ИСПОЛЬЗОВАНИЯ КОРОВ С РАЗНЫМ ВОЗРАСТОМ И ЖИВОЙ МАССОЙ ПРИ ПЕРВОМ ОТЕЛЕ

2019 ◽  
pp. 42-45 ◽  
Author(s):  
D.G. KOMKOV ◽  
R.M. KERTIEV ◽  
N.M. KERTIEVA
Keyword(s):  
Body Weight ◽  
Live Weight ◽  
Holstein Cows ◽  
Physiological Maturity ◽  
Entire Life ◽  
Economic Use

Приведены результаты исследований продолжительности и интенсивности использования коров голштинской породы с разным возрастом и живой массой при первом отеле, являющиеся показателями физиологической зрелости и готовности организма к последующему продуктивному периоду жизни. Наиболее продолжительный продуктивный период выявлен у коров с возрастом первого отела 2427 мес., средние значения которых составляют 3,33,4 отела. Указанные группы коров отличаются более высоким уровнем пожизненной продуктивности и интенсивностью использования на единицу времени всей жизни и продуктивного периода. Продуктивное долголетие коров имеет тенденцию к повышению с увеличением массы тела при первом отеле. Наиболее продолжительные сроки хозяйственного использования выявлены у животных с живой массой при первом отеле 450500 кг, продуктивный период которых на 115234 дня, или на 0,40,6 лактаций выше, чем в других анализируемых группах скота. Высокую пожизненную продуктивность (3135 тыс. кг) имеют животные с массой тела более 500 кг при первом отеле. Вместе с тем интенсивный раздой наиболее крупных первотелок с массой тела выше 550 кг сопровождается снижением продолжительности жизни и продуктивного периода использования коров.The article presents the results of studies on the duration and intensity of use of Holstein cows with different age and body weight at the first calving, which are an indicator of physiological maturity and readiness of the organism for the subsequent productive period of life. The longest productive period was revealed in cows with the first calving age of 2427 months, the average values of which are 3.33.4 calving. These groups of cows are distinguished by a higher level of lifelong production and the intensity of use per unit of time of their entire life and productive period. Productive longevity of cows tends to increase with an increase in body weight at the first calving. The longest periods of economic use were found in animals with a live weight at the first calving with in 450500 kg, in which the productive period is 115234 days or 0.40.6 lactations higher than in other analyzed groups of animals. High lifelong productivity (3135 thousand kg) have animals weighing more than 500 kg at the first calving. At the same time, intensive stripping of the largest heifers with a body weight above 550 kg is accompanied by a decrease in the lifespan and productive period of using cows.

Growth and carcass characteristics of three lamb genotypes finished on the same level of feeding

2000 ◽  
Vol 70 (1) ◽  
pp. 51-61 ◽  
Author(s):  
L. O. W. McClintont ◽  
A. F. Carson
Keyword(s):  
Fatty Acids ◽  
Body Weight ◽  
Fatty Acid ◽  
Weight Gain ◽  
Polyunsaturated Fatty Acids ◽  
Body Weight Gain ◽  
Saturated Fatty Acids ◽  
Carcass Characteristics ◽  
Live Weight ◽  
Ash Content

AbstractThis study investigated the efficiency of growth and the carcass characteristics of 24 Greyface (Border Leicester × Scottish Blackface), 24 Texel (12 purebred and 12 Texel × Texel-Greyface) and 24 Rouge (12 purebred and 12 Rouge × Rouge-Greyface) lambs finished on the same level of feeding. The efficiency of live-weight gain (kg/MJ) was higher in Greyface compared with Texel lambs (P< 0·01). The efficiency of empty body-weight gain (kg/MJ) was higher in Greyface (P< 0·01) and Rouge (P< 0·05) compared with Texel lambs. The efficiency of carcass gains (kg/MJ) tended to be higher in Greyface and Rouge compared with Texel lambs (P= 0·07). The efficiency of non-carcass component gains (kg/MJ) was also higher in Greyface compared with Texel lambs (P0·05). Carcass water, protein, lipid and ash gains did not vary significantly between the genotypes, however carcass energy gain tended to be higher in Greyface and Rouge compared with Texel lambs (P= 0·08). The relative proportions of water, protein, lipid and ash in carcass gains did not vary significantly between the genotypes. At the end of the experiment carcass water content was higher in Texel compared with Greyface lambs (P< 0·05) and carcass ash content was lower in Texel compared with Greyface (P< 0·01) and Rouge (P< 0·05) lambs. The concentration of saturated fatty acids was higher in Greyface compared with Rouge lambs (P< 0·001) and higher in Rouge compared with Texel lambs (P< 0·05). Monounsaturated fatty acid concentrations were higher in Rouge compared with Greyface lambs (P< 0·05) and higher in Texel compared with Rouge lambs (P< 0·001). Polyunsaturated fatty acid concentrations were higher in Rouge and Texel compared with Greyface lambs (P< 0·01). The ratio of n-6:n-3 fatty acids was lower in Rouge compared with Greyface lambs (P< 0·05).The efficiency of empty body gain was higher in male compared with female lambs (P< 0·05). Carcass water (P< 0·01) and protein (P< 0·05) gains were higher in male lambs. At the end of the experiment male carcasses contained a higher content of water (P< 0·05), protein (P< 0·01) and ash (P= 0·07), and a lower lipid (P< 0·05) and energy (P< 0·001) content. Carcass lipids from male lambs contained a higher concentration of polyunsaturated fatty acids (P< 0·001) and tended to contain a lower concentration of saturated fatty acids (P = 0·06).

Effect of naturally occurring and synthetic androgens on growth, body composition and muscle glucocorticoid receptors in wether lambs

1994 ◽  
Vol 58 (3) ◽  
pp. 357-364 ◽  
Author(s):  
H. Gallbraith ◽  
A. D. Berry
Keyword(s):  
Skeletal Muscle ◽  
Body Weight ◽  
Crude Protein ◽  
Binding Capacity ◽  
Live Weight ◽  
Backfat Thickness ◽  
Trenbolone Acetate ◽  
Naturally Occurring ◽  
Main Effects ◽  
Nandrolone Phenylpropionate

AbstractTwenty-five Border Leicester ♂ × Blackface ♀ wether lambs aged about 4 months and weighing on average 28·5 kg were allocated to be treated with the naturally occurring steroid testosterone or trenbolone acetate or nandrolone phenylpropionate which are steroids synthetically produced. Treatment groups were as follows: untreated controls (C); 50 mg testosterone (T); 50 mg trenbolone acetate (TA); 50 mg testosterone + 50 mg trenbolone acetate (TTA) or 50 mg nandrolone phenylpropionate (N). Implants were given at 100 and again at 63 days before slaughter. The lambs were offered to appetite a good quality diet containing, per kg dry matter, an estimated 11·0 MJ metabolizable energy and 185 g crude protein. Comparisons were made for the main effects of T and TA and also interactions between T and TA. Effects due to N were assessed statistically against untreated controls. Treatment with T, on average, increased live-weight gain (LWG), empty body weight (EBW) and reduced backfat thickness and the weight (g/kg EBW) of perirenal and retroperitoneal fat. Main effects due to TA were increases in killing-out ratio and depth of the gigot joint and reductions in backfat thickness. Treatment with N increased the empty body weight and (g/kg) carcass ash. Non-significant (P > 0·05) trends were suggested for increases in carcass crude protein due to T and TA treatments. T and TA but not N treatments exhibited marked androgenic activity in increasing the weight (mg/kg EBW) of the accessary vesicular gland. TA and N, but not T, reduced the weight (g/kg EBW) of the thymus gland.The maximum binding capacity of post-morte m skeletal muscle (m. gluteus) for (3H)-dexamethasone was reduced by TA but increased by T and N. These results suggest differences in the binding capacity of corticosteroid receptors which may be related to differences in the effects of T and TA on protein metabolism in skeletal muscle.

Effects in bacon pigs of differing levels of nutrition to 20 kg. body weight

1964 ◽  
Vol 6 (3) ◽  
pp. 301-308 ◽  
Author(s):  
Henning E. Nielsen
Keyword(s):  
Body Weight ◽  
Average Daily Gain ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Eye Muscle ◽  
Group 4 ◽  
Second Period ◽  
Daily Gain

Sixteen blocks of eight littermate pigs were weaned at 3 weeks of age and each divided into four groups. Various levels of nutrition were applied to the pigs so that the four groups reached 20 kg. at 59, 68, 80 and 91 days of age, respectively.Only small differences were observed between groups in feed conversion ratio to 20 kg.; however, Group 4 required more feed per kg. gain than the three other groups.During the second period (20–90 kg.) the pigs in each group were divided into two sub-groups, which were on a high and a low plane of nutrition respectively. In both sub-groups the type of feeding before 20 kg. influenced the average daily gain and feed conversion ratio. The older the pigs were at 20 kg. the higher the daily gain and the lower the feed conversion ratio in the following period. There was an increase in daily feed intake with increased age at 20 kg. for pigs fed ad lib. during the second period.An increase in age at 20 kg. caused a significant decrease in thickness of backfat, a greater area of eye muscle and a smaller area of fat overlying muscle. For pigs fed ad lib. the area of eye muscle was significantly increased by a higher age at 20 kg. live-weight.

scholarly journals Nonlinear modeling growth body weight of Mangalarga Marchador horses

2017 ◽  
Vol 47 (4) ◽  
Author(s):  
Felipe Amorim Caetano Souza ◽  
Tales Jesus Fernandes ◽  
Raquel Silva de Moura ◽  
Sarah Laguna Conceição Meirelles ◽  
Rafaela Aparecida Ribeiro ◽  
...  
Keyword(s):  
Body Weight ◽  
Linear Models ◽  
Nonlinear Modeling ◽  
Growth Curves ◽  
Live Weight ◽  
Information Criterion ◽  
Coefficient Of Determination ◽  
Cross Sectional ◽  
Adult Body Weight ◽  
The Cross

ABSTRACT: The analysis of the growth and development of various species has been done using the growth curves of the specific animal based on non-linear models. The objective of the current study was to evaluate the fit of the Brody, Gompertz, Logistic and von Bertalanffy models to the cross-sectional data of the live weight of the MangalargaMarchador horses to identify the best model and make accurate predictions regarding the growth and maturity in the males and females of this breed. The study involved recording the weight of 214 horses, of which 94 were males and 120 were non-pregnant females, between 6 and 153 months of age. The parameters of the model were estimated by employing the method of least squares, using the iteratively regularized Gauss-Newton method and the R software package. Comparison of the models was done based on the following criteria: coefficient of determination (R²); Residual Standard Deviation (RSD); corrected Akaike Information Criterion (AICc). The estimated weight of the adult horses by the models ranged between 431kg and 439kg for males and between 416kg and 420kg for females. The growth curves were studied using the cross-sectional data collection method. For males the von Bertalanffymodel was found to be the most effective in expressing growth, while in females the Brody model was more suitable. The MangalargaMarchador females achieve adult body weight earlier than the males.

Puberty in the buffalo-cow

1955 ◽  
Vol 46 (2) ◽  
pp. 137-142 ◽  
Author(s):  
E. S. E. Hafez
Keyword(s):  
Body Weight ◽  
Mammary Gland ◽  
Mammary Gland Development ◽  
Post Partum ◽  
Live Weight ◽  
The Body ◽  
Male Homosexuality ◽  
Rectal Palpation ◽  
Gland Development ◽  
Buffalo Cow

Thirty-five buffalo heifers were tested daily with fertile males to ascertain the age and live weight at first possible oestrus and conception. Patterns of sexual behaviour were recorded while rectal palpation was carried out to define the conditions of the ovaries and to diagnose pregnancies. The mammary gland development, as well as the intensity of lactation, were noted post partum.1. Pubertal matings were allowed with less certainty than adult matings. The signs of oestrus were intensified by the recurrence of heat and association with the male. Homosexuality was only observed in the first and second oestrus.2. The average age of first oestrus, first conception and first calving were 406, 647 and 963 days respectively. The body weight at first oestrus and first conception were 198 and 319 kg. respectively.3. The number of services/conception ranged from 1 to 7 with an average of 4·25. The number of silent heats/female ranged from 1 to 4 with an average of 1·65. The period elapsing from first oestrus to first conception ranged from 52 to 438 days. Before conception, there was a period of anoestrus which ranged from 115 to 314 days, this was probably due to weak oestrus symptoms.4. The live weights at 28, 84, 140, 196, 252 and 308 days were correlated with the age and live weight at first oestrus as well as the live weight at first conception.5. All the buffalo-cows except two which showed oestrus conceived. Fourteen animals calved normally while fourteen aborted after 131–318 days. The gestation period ranged from 312 to 321 days with an average of 316 days. The birth weight of young ranged from 33 to 40 kg. Seven animals were not lactating while seven gave 1–2 kg. of milk.6. Puberty phenomenon is a gradual phenomenon and is attained in steps: sexual desire, ovulation, oestrus, conception, pregnancy then lactation.

The development of the lamb with particular reference to the alimentary tract

1964 ◽  
Vol 6 (2) ◽  
pp. 169-178 ◽  
Author(s):  
R. V. Large
Keyword(s):  
Body Weight ◽  
Alimentary Tract ◽  
Live Weight ◽  
The Body ◽  
Root Transformation ◽  
Feeding Regimes ◽  
Gut Fill ◽  
Relationship Of ◽  
The Relationship

1. Thirty Suffolk × Half bred lambs were slaughtered at the following ages: two twin lambs at birth and two singles and two twins at 1, 2, 3, 4, 6, 8 and 16 weeks of age.2. The following weights were recorded: live-weight immediately before slaughter; and carcass, head, skin, feet, alimentary tract, heart, liver, kidneys, lungs and trachea, and blood immediately afterwards.3. The alimentary tract was emptied and weighed in four separate parts; reticulo-rumen, omasum-abomasum, small intestine, large intestine.4. The volumes of the reticulo-rumen and the omasum-abomasum were measured by immersing in water and filling the organs with water to 2 cm. pressure.5. The in vitro digestive efficiency of rumen liquor from lambs of 1, 2, 3 and 4 weeks of age was assessed.6. Empty body weight was considered to be valuable in comparing animals of different ages or from different feeding regimes or at different times of the year because variations in gut ‘fill’ were eliminated.7. There were no differences between singles and twins in the relationship of the fresh weights of the parts of the body to empty body weight, except that development of the liver and the blood was rather slower for singles.8. Little evidence was found of a difference in rate of development of the alimentary tract between singles an d twins, although the log an d square root transformation suggested a possible difference in reticulo-rumen size in favour of twins, significant at the 5% level.

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