EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Effect of ruminally undegradable protein from fish meal on growth and reproduction of peripuberal Brahman bulls



Effect of ruminally undegradable protein from fish meal on growth and reproduction of peripuberal Brahman bulls



Journal of Animal Science 73(4): 947-953



Thirty-nine Brahman bulls (301.7 +/- 4.1 d; 202.7 +/- 4.7 kg) were allotted to one of two treatments and fed soybean meal (SBM)- or fish meal (FIS)-based supplements and hay to examine the effects of source of protein on growth and reproductive development. The fish meal supplement had 72% ruminally undegradable protein (RUP) and the soybean meal supplement had 47% RUP. Bulls assigned to the FIS treatment had higher (P < .01) total weight gain (81.2 +/- 1.4 vs 71.2 +/- 2.2 kg), higher (P < .01) ADG (.97 +/- .02 vs .85 +/- .03 kg), and better (P < .05) feed:gain ratio (7.6 +/- .1 vs 8.6 +/- .1 feed/BW gain for FIS vs SBM, respectively). Age at first motile spermatozoa was not affected (P > .05) by source of protein (429.9 +/- 9.6 vs 427.2 +/- 9.5 d, for bulls receiving FIS or SBM supplements, respectively). Likewise, age at puberty (473.3 +/- 21.7 d vs 465.9 +/- 12.9 d for bulls receiving FIS and SBM supplements, respectively) was similar for both treatment groups. There were no differences between treatments in scrotal circumference at those stages. At puberty semen quality was similar for bulls receiving FIS or SBM treatments, and no differences existed in LH and testosterone concentrations between treatments. We conclude that fish meal supplement increased growth but did not alter reproductive parameters in Brahman bulls.

(PDF emailed within 1 workday: $29.90)

Accession: 002604202

Download citation: RISBibTeXText

PMID: 7628971



Related references

Testicular function during the peripubertal period in Brahman bulls receiving different amounts of ruminally undegradable protein. Journal of Animal Science 71(SUPPL 1): 212, 1993

The effect of feeding ruminally undegradable protein on postpartum reproduction of Awassi ewes. Asian Australasian Journal of Animal Sciences 14(8): 1125-1128, 2001

The effect of feeding ruminally undegradable protein on postpartum reproduction of Awassi ewes. Asian-Australasian Journal of Animal Sciences 14(8): 1125-1128, 2001

Testicular growth and semen quality in peripuberal Brahman bulls. Livestock Research for Rural Development 15(10): article 6, 2003

Testicular and epididymal function during the peripuberal period in Brahman bulls receiving various amounts of protein degradable in the rumen. Theriogenology 45(2): 477-488, 1996

Effect of varying ruminally degradable to ruminally undegradable protein ratio on nutrient intake, digestibility and N metabolism in Nili Ravi buffalo calves ( Bubalus bubalis ). Livestock Science 122(2-3): 0-133, 2009

Roasted soybeans, blood meal, and tallow as sources of fat and ruminally undegradable protein in the diets of lactating cows. Journal of Dairy Science 79(9): 1603-1610, 1996

The effect of feeding graded levels of ruminally undegradable protein on the growth of sheep and nitrogen flow in continuous culture. Journal of Animal Science 75(SUPPL 1): 261, 1997

Influence of hindgut on nutrient digestion of diet varying with RDP (ruminally degradable protein) to UDP (ruminally undegradable protein) ratios in sheep. Chinese Journal of Animal Science 41(4): 22-25, 2005

Relationship between corporal and testicular measurements in peripuberal Brahman bulls. Livestock Research for Rural Development 14(5): 1-14, 2002

The utilization of food elements by growing chicks. 4. Meat meal and fish meal compared with meat meal, fish meal, and soybean meal as protein concentrates. (Univ. Nebraska Agric. Exp. Stat. Res. Bulls. No. 97). The utilization of food elements by growing chicks. 4. Meat meal and fish meal compared with meat meal, fish meal, and soybean meal as protein concentrates, Univ. Nebraska Agric. Exp. Stat., Feb. 7, 1938

Effects of supplemental ruminally degradable protein versus increasing amounts of supplemental ruminally undegradable protein on site and extent of digestion and ruminal characteristics in lambs fed low-quality forage. Journal of Animal Science 85(12): 3322-3330, 2007

Effects of supplemental ruminally degradable protein versus increasing amounts of supplemental ruminally undegradable protein on nitrogen retention, apparent digestibility, and nutrient flux across visceral tissues in lambs fed low-quality forage. Journal of Animal Science 85(12): 3331-3339, 2007

The effects of ruminally undegradable protein and fat on secretion of growth hormone and insulin in beef heifers. Journal of Animal Science 73(SUPPL 1): 328, 1995

Evaluation of ruminally protected methionine and lysine or blood meal and fish meal as protein sources for lactating Holsteins. Journal of Dairy Science 82(10): 2115-2120, 1999