686 Effect of licking molasses–urea block on weight gain, rumen fermentation, and the main microbe populations of grazing sheep during grass withering period

2017 ◽  
Vol 95 (suppl_4) ◽  
pp. 335-335
Author(s):  
C. Li ◽  
A. X. S. Xue ◽  
Q. Zhao
Keyword(s):  
Weight Gain ◽  
Rumen Fermentation ◽  
Grazing Sheep

scholarly journals Effect of Sward Height on Rumen Degradation in Merino Grazing Sheep

1993 ◽  
Vol 1993 ◽  
pp. 180-180
Author(s):  
A.R. Mantecón ◽  
M.D. Carro ◽  
F.J. Giráldez ◽  
M.J. Ranilla ◽  
P.R. Revesado ◽  
...  
Keyword(s):  
Dry Matter ◽  
Rumen Fermentation ◽  
Sheep Grazing ◽  
Merino Sheep ◽  
Rumen Degradation ◽  
Sward Height ◽  
Grazing Sheep

It is now well established that the height of the sward grazed by sheep has a large effect on their performance (Hodgson, Mackie and Parker, 1986). However, there is a scarce of information about the rumen fermentation in sheep grazing at different sward heights. The aim of this experiment was to study the effect of sward height (4 vs 6 cm) on the rumen fermentation in Merino sheep which were continuously maintained on the pasture.The study was carried out on a continuously stocked pasture in August 1992. Twenty mature Merino sheep were used to obtain two different sward heights: 4 cm (low; LSH) and 6 cm (high; HSH). Sward height was measured twice weekly using a swardstick and was controlled by the addition and removal of sheep. Herbage mass was of 633 and 1397 kg of dry matter (DM)/Ha for the LSH and HSH paddocks, respectively.

Effects of monensin and/or yeast culture fed in the diet or infused into the abomasum on rumen fermentation and concentrations of glucose, urea, insulin, gastrin and cholecystokinin in blood of sheep

1992 ◽  
Vol 1992 ◽  
pp. 213-213
Author(s):  
P.P. Frumholtz ◽  
C.J. Newbold ◽  
E.R. Ørskov ◽  
R.J. Wallace
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Weight Gain ◽  
Blood Parameters ◽  
Rumen Fermentation ◽  
Yeast Culture ◽  
Digestive Physiology ◽  
Plasma Gastrin ◽  
Modes Of Action ◽  
Ruminal Digestion

Monensin and yeast culture are known to alter rumen fermentation. Their modes of action appear to be different, and a recent study showed that the combination of both yeast culture (YC) and monensin stimulated weight gain in bulls by 12-13% over monensin alone (Spedding, 1990). However, Edwards et al. (1991) found no complementary effects between YC and avoparcin when they were combined in a silage diet for steers. In addition to its action in the rumen, monensin is known to affect post-ruminal digestion (Armstrong, 1984). Viable Saccharomyces cerevisiae have been isolated from the duodenal digesta of sheep fed YC (Newbold et al., 1990), suggesting that YC too might have post-ruminal effects. The aim of the current study was to assess the effect of monensin and/or yeast culture in the diet or infused into the abomasum on rumen fermentation and blood parameters, and also on digestive physiology by monitoring plasma gastrin, insulin and CCK-8 concentration.

scholarly journals Effect of the composition of starter diet fed in the rearing phase on the performance and certain physiological parameters of Holstein calves

2019 ◽  
Vol 64 (No. 9) ◽  
pp. 367-376 ◽  
Author(s):  
Szandra Tóth ◽  
Melinda Kovács ◽  
Brigitta Bóta ◽  
Judit Szabó-Fodor ◽  
Gábor Bakos ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Volatile Fatty Acids ◽  
Starch Content ◽  
Rumen Fermentation ◽  
Feed Consumption ◽  
Blood Metabolites ◽  
Plasma Urea ◽  
Rumen Microbiota

The objective of this study was to compare the effects of calf starters of different starch and fibre content on the growth, blood and rumen parameters of Holstein female calves during the pre-weaning period. A total of 60 calves were divided into two groups. Group A/B was fed according to a two-phase calf nutrition system: the calves received calf starter “A” (28.5% starch content, 16% neutral detergent fibre (NDF), 9.2% acid detergent fibre (ADF)) in days 7–45 and then calf starter “B” (14.2% starch content, 32.4% NDF, 14.3% ADF) in days 46–70. Calves of group B received calf starter “B” throughout the experimental period. The calves were weaned between 52 and 61 days of life. The data on body weight, weight gain, starter feed intake, blood metabolites and rumen fermentation parameters were collected individually. In the first phase of experiment, the starter feed consumption of A/B group was higher than that of B group (P < 0.05), but it did not manifest in differences in body weight at weaning time. At some of the sampling times, the different composition of starter diets significantly (P < 0.05) influenced the plasma urea, albumin, glucose and triglyceride concentrations. The consumption of diet with different starch and NDF content had no significant effect either on the composition of the rumen microbiota or on the ruminal concentration of volatile fatty acids (VFA) and ammonia. In some cases significant correlations (–0.83 and –0.93; 0.82 and 0.90) were found between the composition of rumen microbiota and ruminal VFA concentration. Feeding a diet of higher starch content (28.5 vs 14.2%) in the first 45 days of life did not affect rumen fermentation, rumen microbiota and the most important blood metabolites, apart from a few exceptions. The production parameters of calves, including total feed intake and body weight gain, were similar in the experiment.

Effect of nutrition, genotype, lactation and wool cover on response by grazing sheep to methionine esters and polymer-encapsulated methionine

1979 ◽  
Vol 30 (4) ◽  
pp. 711 ◽  
Author(s):  
JL Wheeler ◽  
KA Ferguson ◽  
NT Hinks
Keyword(s):  
Weight Gain ◽  
Daily Weight Gain ◽  
Wool Growth ◽  
Native Pasture ◽  
Grazing Sheep ◽  
Dose Levels ◽  
Improved Pasture

Esters of methionine added to the diet of penned sheep have been reported to increase wool growth. Four experiments were undertaken in which grazing sheep were drenched with methionine derivatives. In experiment 1 methyl methionine hydroxy analogue (MeMHA) and ethyl methionine hydrochloride (EMHCl) increased wool growth similarly, by about 30% (P < 0.001) on native pasture and 4% (P > 0.05) on improved pasture. Dosing three times per week was as effective as dosing six times per week. In experiment 2, wool growth of unsupplemented sheep on improved pasture in spring was c. 12 g/d and was not increased by the administration of MeMHA to fine- or strong-wool sheep whether lactating or dry. Daily weight gain by young lambs declined from 258 to 215 g/d when their dams were given MeMHA at 4 g/d 5 days per week (P < 0.05). Administration of methionine as MeMHA or EMHCl or in a polymer-encapsulated form at 1.25 gld gave c. 1 g/d additional wool in experiment 3; 2.5 g/d increased wool growth by c. 1.5 g/d (P < 0.001). In experiment 4, MeMHA doses of 1.25 and 2.5 g methionine equivalent per day produced no response in sheep in full wool. In shorn Merinos wool growth increased by 1.2 and 0.4 g/d, and Dorset Horn x Merinos showed a decrease of 0.5 and an increase of 1 .3 g wool/d at the two dose levels (P < 0.01). Wool growth was increased by c. 1 g/d by 1.25 g MeMHA in sheep that had received 10 mg selenium but not in control sheep. These responses are less than those reported from pen experiments in which methionine derivatives were incorporated in the diet. It is concluded that at current prices it would not be profitable to supplement grazing sheep with any of these forms of methionine.

Long-term effects of ensiled cornstalk diet on methane emission, rumen fermentation, methanogenesis and weight gain in sheep

2013 ◽  
Vol 115 (1-3) ◽  
pp. 15-20 ◽  
Author(s):  
C. Liu ◽  
Z.P. Zhu ◽  
B. Shang ◽  
Y.X. Chen ◽  
T.J. Guo ◽  
...  
Keyword(s):  
Weight Gain ◽  
Methane Emission ◽  
Rumen Fermentation ◽  
Long Term Effects

scholarly journals Feed additive effect of Chromolaena odorata on performance of West African dwarf bucks

2020 ◽  
Vol 47 (3) ◽  
pp. 262-272
Author(s):  
A. O. Oni ◽  
B. Ogadu ◽  
A. O. Yusuf ◽  
O. Adelusi ◽  
O. S. Sowande ◽  
...  
Keyword(s):  
Weight Gain ◽  
Rumen Fermentation ◽  
Serum Glucose ◽  
West African ◽  
Feed Additives ◽  
Feed Additive ◽  
Average Weight ◽  
Weight Changes ◽  
West African Dwarf ◽  
Negative Effect

Efficient rumen fermentation is necessary for improved feed utilization and animal production. The use of feed additives to improve rumen fermentation is promising. Twenty-four West African Dwarf (WAD) bucks with an average weight of 10±2kg were randomly allocated on weight equalization to four treatment diets with 0, 2, 4 and 6% C. odorata inclusion for a period of three months. Six animals per treatment were used for the study with each animal served as a replicate. Weight changes were taken weekly and digestibility study was carried out. At the end of the study blood samples were also collected for haematological and serum assay. Results showed that the addition of C. odorata to the diets influenced (p<0.05) weight gain of experimental goats with goats on diets (4% inclusion) having the highest value (6.20kg). Nutrient intake, apparent digestibility of nutrients, and nitrogen utilization by WAD goats fed experimental diets were not (p>0.05) affected by dietary inclusion of C. odorata. Haematological parameters were not differed (p>0.05) across the dietary treatments. However, serum glucose and aspartate aminotransferase increased (p<0.05) with increase in inclusion of C. odorata. It can be concluded that the use of C. odorata as an additive at 4% inclusion increased weight gain of goats with normal blood ranges indicating no negative effect of goats' health.

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