Compudose® : its effects on the growth, offspring performance, lactational performance, and carcass characteristics of Hereford × Friesian heifers at pasture

1998 ◽  
Vol 49 (7) ◽  
pp. 1167 ◽  
Author(s):  
J. L. Burke ◽  
J. L. Burke ◽  
S. T. Morris ◽  
S. T. Morris ◽  
S. N. McCutcheon ◽  
...  
Keyword(s):  
Milk Production ◽  
Carcass Characteristics ◽  
Offspring Performance ◽  
Skeletal Size ◽  
Lactational Performance ◽  
Positive Effect

This study investigated the effects of Compudose® on growth, lactational performance, carcass characteristics, and offspring performance of Hereford × Friesian (H×F) once-bred heifers (OBH) under pastoral conditions. Nineteen H×F heifers were implanted with Compudose 400 at 90 days of age (Compudose 90), 19 were implanted with Compudose 400 at 210 days of age (Compudose 210), and 19 were not implanted (control). Neither Compudose group differed significantly in liveweight from the controls. However, there was a tendency for the Compudose 90 group to be slightly heavier, and the Compudose 210 group slightly lighter, than the controls so that the only significant differences in liveweight were between the two Compudose groups. Similarly, there were no consistent effects of Compudose on measures of body or skeletal size. The effects of Compudose on carcass characteristics were small and related mainly to a tendency for increased muscling. Compudose delayed conception slightly but had no effects on calf birthweight. However, calves born to control heifers were 15·3 kg and 16·2 kg heavier (P < 0·05) at weaning than calves born to Compudose 90 and Compudose 210 heifers, respectively. Most of this difference in liveweight was established by Week 4 of lactation. This implies that Compudose treatment inhibited milk production of the dams, particularly in the early part of lactation, an effect not detected by the weigh-nurse-weigh (WNW) method. Implanting heifers with Compudose at 90 or 210 days of age is unlikely to be beneficial, both because it has little positive effect on liveweight gain or carcass characteristics and because it may inhibit lactational performance.

scholarly journals Foliar analysis in experimentally grown Lacatan bananas in relation to leaf production and bunch weight.

1962 ◽  
Vol 10 (2) ◽  
pp. 118-126 ◽  
Author(s):  
W.J. Brezowsky ◽  
J. Van Biesen
Keyword(s):  
Rainy Season ◽  
Foliar Analysis ◽  
Depressing Effect ◽  
Leaf Production ◽  
Positive Effect ◽  
Leaf N

Foliar analyses from October to April (the drier part of the year) showed a positive effect of an increased potash application on leaf K, and a depressing effect on leaf Mg. Both these effects were statistically insignificant just before and during the period when most of the plants started to shoot. There was no significant effect of increased N applications on leaf N, except in the early part of the rainy season. Increased K also had a significant effect on bunch weight, hand weight and the number of hands per stem.-Cameroons Develop. Corp. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Influence of complex action of probiotic and specific prophylaxis of associated mucosal diseases on some quantitative traits of dairy cattle performance

2020 ◽  
Vol 22 (97) ◽  
pp. 79-87
Author(s):  
S. O. Sidashova ◽  
B. V. Gutyj ◽  
V. I. Khalak ◽  
O. G. Humeny
Keyword(s):  
Milk Production ◽  
Growth Parameters ◽  
Industrial Complex ◽  
Functional Evaluation ◽  
Maximum Increase ◽  
Acid Base Status ◽  
Complex Scheme ◽  
Positive Effect ◽  
Experimental Group ◽  
Dairy Breed

The article presents the results of studies of indicators of reaching the age of the first calving of repair heifers of the Ukrainian red dairy breed under the conditions of use of the complex scheme of specific immunoprophylaxis and preparation “Multibacterin veterinary suspension”.The research was conducted in the conditions of the industrial complex for milk production of Dolinskoye LLC, Odessa region. The subjects of the study were groups-analogues of breeding heifers and the firstborn of the genotype.The assessment of repair young growth indicators was performed taking into account the following indicators: age of fertile insemination, months; age of first calving, months; milk production for 100 and 305 days of the first lactation, kg. For the functional evaluation of the digestive status of animals used to determine the transit of feed, in % and the assessment of acid-base status of faeces, pH unit. The following indicators were investigated in the serum of repair calves of mating age: total protein, g/l; albumin, g/l; globulin, g/l; glucose, mmol/l; urea, mmol/l; alkaline phosphatase, units/l and liver enzymes (ALT and AST, units/l).The economic efficiency of the results of the studies was calculated according to the indicator “average hope of one cow for 305 days of the first lactation, kg”. It was found that, due to the positive simultaneous effect of probiotic protection of the intestinal mucous membranes, repair heifers showed a higher growth and development rate and the first calving had 28.07 months, which is 2.31 months (8.45 %) earlier than in control (P < 0.001).The optimization of the technology of growing heifers for the use in the scheme of specific immunoprophylaxis of a probiotic drug – immunomodulator, which feed use had a prolonged positive effect not only on the growth parameters of young animals, but also on the increase of milk productivity per first lactation was experimentally proved.Calculations of cost-effectiveness of research results showed that the maximum increase in production (+ 9.10 %) was obtained from the firstborn of the experimental group born to cows mothers older than two lactations, where the scheme of specific prevention of associated diseases was carried out for repair heifers with previous normophilic laceration probiotic feed preparation.

scholarly journals Influence of reproductive qualities on dairy productivity of cows of the Simmental breed

2021 ◽  
Vol 285 ◽  
pp. 04005
Author(s):  
Maria Grinchuk ◽  
Yulia Nesterova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Mass Fraction ◽  
Milk Protein ◽  
Production Performance ◽  
Dry Period ◽  
Milk Productivity ◽  
Service Period ◽  
Positive Effect ◽  
Different Levels

The aim of work is to explore influence of first fruitful insemination, service period and dry period to dairy productivity of Simmental cows. The research is aimed at studying the milk production of Simmental cows with different levels of reproductive qualities. The result of the research, a relation was established between the age of the first fruitful insemination, the duration of the service period, the duration of the dry period and milk production performance. It has been established that the age of the first fruitful insemination at 18-24 months has the most beneficial effect on subsequent milk production. The service period of 90-120 days has a positive effect to an increase in milk yield per 305 days of lactation, the longer service period negatively affects to the mass fraction of fat. With an increase in the duration of the dry period, the mass fraction of fat increases, but milk yield decreases. The influence of reproductive qualities to the milk protein is negligible. It was revealed that the age of the first insemination at 18-24 months is the most profitable for production. According to the results of the research, it can be judged that reproductive qualities, in combination with other factors, affect the milk productivity of Simmental cows.

Value for milk production of artificially dried forages as cobs and pellets

1972 ◽  
Vol 14 (1) ◽  
pp. 69-75 ◽  
Author(s):  
J. A. Milne ◽  
E. F. Thomson ◽  
R. C. Campling
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Live Weight ◽  
Fat Content ◽  
Significant Positive Effect ◽  
Significant Difference ◽  
Four Levels ◽  
Milk Solids ◽  
Positive Effect ◽  
Basal Ration

SUMMARYTwo experiments were conducted to compare the milk-producing value of dried forages in the form of cobs and pellets as replacements for a standard dairy concentrate. Four levels (0·33, 0·44, 0·55 and 0·66 kg/kg milk) of dried forage or standard dairy concentrate were offered in addition to a basal ration of 6 kg hay and 2 kg standard dairy concentrate. In both experiments the rate of eating by the cows of cobs was significantly slower (P<0·05) than that of pellets. No significant difference was found between the cobs and pellets in either experiment in their value for milk production. In Experiment 2 the standard dairy concentrate had a non-significantly higher (P>0·05) milk-producing value than the dried lucerne. Level of feeding had a significant positive effect on the milk yield (P< 0·001) of cows offered the dried grass and lucerne and on the milk solids- not-fat content (P<0·05) and live weight (P<0·01) of cows offered the dried grass, lucerne and standard dairy concentrate.

Sensitivity of mammary secretory cell turnover to protein restriction and re-alimentation during early lactation

1997 ◽  
Vol 1997 ◽  
pp. 130-130
Author(s):  
M.G. Goodwill ◽  
N.S. Jessop ◽  
J.D. Oldham
Keyword(s):  
Cell Proliferation ◽  
Mammary Gland ◽  
Milk Production ◽  
Secretory Cell ◽  
Protein Restriction ◽  
Secretory Cells ◽  
Early Lactation ◽  
Cell Turnover ◽  
Lactational Performance

Milk production depends on both the number and activity of secretory cells within the mammary gland. Our earlier work showed the sensitivity of lactational performance to changes in diet during lactation (Goodwill et al, 1996). This study investigated the influence of protein undernutrition and re-alimentation on secretory cell proliferation and death in the mammary gland of rats during early lactation.

scholarly journals The combining ability of poltava meat and welsh pigs breed combination

1970 ◽  
Vol 21 ◽  
pp. 270-273
Author(s):  
O. M. Tsereniuk ◽  
O. V. Akimov ◽  
O. I. Chalyi ◽  
Yu. V. Chereuta
Keyword(s):  
Milk Production ◽  
Combining Ability ◽  
Evaluation Method ◽  
Multiple Pregnancy ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Reproductive Ability ◽  
Diallel Crossing ◽  
Reciprocal Crossing ◽  
Positive Effect

Aim. Poltava Meat and Welsh pigs breed reciprocal crossing combination ability study. Methods. The combination ability evaluation method, the method of incomplete diallel crossing. The traditional methods of pigs general and specific combining ability effects estimation. Results. The Rosinka family sows were characterized by positive values of general combining ability, except the prolificacy rate. The Bystra family sows by the multiple pregnancy and milk production indexes had positive values of general combining ability, but by a nest weight at a birth and weaning – negative. For the Vorskla family sows the positive indexes of general combining ability were identified for a nest weight at a birth only, for the rest indexes – the negative value of general combining ability were installed. The Rosinka family sows had the positive value of specific combining ability for all maternal productivity indxes. The Bystra family sows were characterized by positive value of specific combining ability only for a nest weight at a birth and milk production indexes. The Vorskla family sows by the all maternal productivity indexes had negative specific combining values. Conclusions. For complex reproductive ability indexes for various lines and families combinations the highest positive effect of specific combining values was obtained for Rosinka family sows combinations of Poltava meat breed with the Welsh breed boars. Keywords: pigs, Welsh breed, Poltava Meat breed, reproductive ability, combining ability.

USE OF ENZYME COMPLEX "FIBRASE" IN FEEDING COWS

2020 ◽  
Author(s):  
Nikolay Buryakov ◽  
Maria Buryakova ◽  
Irina Hardik
Keyword(s):  
Comparative Analysis ◽  
Milk Production ◽  
Nutritional Value ◽  
Quality Characteristics ◽  
Enzyme Complex ◽  
Milk Cows ◽  
Positive Effect

Comparative analysis of nutritional value of daily rations of the cows used on the farm, determined a positive effect of enzyme complex "FIBRASE" on the level milk production and quality characteristics of milk cows in first third of lactation.

EFFECT OF COLD EXPOSURE ON MILK PRODUCTION AND ENERGY BALANCE IN THE LACTATING EWE

1984 ◽  
Vol 64 (2) ◽  
pp. 379-389 ◽  
Author(s):  
G. E. McBRIDE ◽  
R. J. CHRISTOPHERSON
Keyword(s):  
Energy Balance ◽  
Milk Production ◽  
Cold Exposure ◽  
Milk Fat ◽  
Experimental Period ◽  
Milk Composition ◽  
Energy Deficit ◽  
Net Energy ◽  
Lactational Performance ◽  
Daily Milk Production

The lactational performances of shorn ewes chronically exposed to a thermoneutral (21 ± 1 °C) or cold (0 ± 1 °C) environment were compared in two experiments. Heat production measured after 1, 21 and 41 days of cold exposure was increased by 20% (P < 0.05), 43% (P < 0.01) and 55% (P < 0.001), respectively, over thermoneutral control values. In both experiments, cold exposure increased milk fat concentration (P < 0.05). Milk protein and lactose concentrations were maintained in exp. 1 but tended to be increased in exp. 2 as a result of cold exposure. Milk obtained from the cold-exposed ewes was characterized by a relative decrease in short-chain fatty acid secretion (P < 0.01). Although milk composition was affected by cold stress, daily milk production was not significantly altered; as a consequence, total energy lost in the milk tended to be slightly higher for the cold-stressed ewes. The increased energy lost as heat and in the milk during cold exposure resulted in a net energy deficit throughout most of the experimental period. The present data suggest that the lactational performance of a ewe nursing a single lamb is not impaired by chronic exposure to an ambient temperature of 0 °C. Key words: Cold, milk production, milk composition, ewes, energy balance

Effect of beta lactoglobulin polymorphism on milk production in Holstein dairy cattle of Iran

2007 ◽  
Vol 2007 ◽  
pp. 7-7
Author(s):  
Sonia Zakizadeh ◽  
Monika Reissmann ◽  
Peter Reinecke ◽  
Ghodrat Rahimi ◽  
Ardeshir Nejati-Javaremi ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Milk Production ◽  
Allelic Frequency ◽  
Major Protein ◽  
Fat Percentage ◽  
Common Genetic Variants ◽  
Pcr Rflp ◽  
Total Milk ◽  
Beta Lactoglobulin ◽  
Positive Effect

Beta-Lacto globulin (BLG) is a major protein in the milk of ruminants. Bovine BLG gene is located on the chromosome 11q28 and has two common genetic variants, ‘A’ and ‘B’ (Gene-Bank X14710). These variants are different in amino acids at positions 64 and 118, where allele ‘A’ has Asp and Val and allele ‘B’ has Gly and Ala, respectively. Difference at position 118 can be detected by PCR-RFLP (Medrano and Agiular-Cordova 1990). It is reported that allele ‘A’ is associated with milk production (Strzalkowska et al. 2002) and allele ‘B’ has a positive effect on fat percentage (Tsiaras et al. 2005). The aim of our study was to estimate the allelic frequency in polymorphic site of exon IV (allele ‘A’ or HaeIII (-)) of BLG gene in Holstein dairy cattle of Iran and also to find any association of total milk production (first lactation) with BLG genotypes.

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