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Supplementation of Sodium Butyrate to Post-weaned Heifer Diets : = Effects on Growth Performance, Nutrient Digestibility, and Health.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Supplementation of Sodium Butyrate to Post-weaned Heifer Diets :/
其他題名:	Effects on Growth Performance, Nutrient Digestibility, and Health.
作者:	Rice, Emily Margaret.
面頁冊數:	1 online resource (74 pages)
附註:	Source: Masters Abstracts International, Volume: 57-04.
Contained By:	Masters Abstracts International57-04(E).
標題:	Agriculture. -
電子資源:	click for full text (PQDT)
ISBN:	9780355627251

Supplementation of Sodium Butyrate to Post-weaned Heifer Diets : = Effects on Growth Performance, Nutrient Digestibility, and Health.
Rice, Emily Margaret.

Supplementation of Sodium Butyrate to Post-weaned Heifer Diets :Effects on Growth Performance, Nutrient Digestibility, and Health. - 1 online resource (74 pages)

Source: Masters Abstracts International, Volume: 57-04.

Thesis (M.S.)--University of New Hampshire, 2017.

Includes bibliographical references

The objective of this study was to determine the effect of varying levels of sodium butyrate (SB) on the growth, digestibility, and health of post-weaned heifers. Forty Holstein dairy heifers with a mean age of 84 d and average body weight (BW) of 100.88 kg were housed in a naturally ventilated freestall barn. Heifers were blocked by birth date and randomly assigned to 1 of 4 treatments in a completely randomized block design: (1) 100 g of soybean meal carrier (control; CON); (2) 0.25 g SB/kg of body weight + carrier (0.25SB); (3) 0.50 g SB/kg of BW + carrier (0.50SB); (4) (0.75 g SB/kg of BW + carrier ( 0.75SB). Treatments were top-dressed and hand-mixed into a total mixed ration (TMR) once daily. Heifers had free access to water. Initial BW, hip and withers heights, heart girth and body length were measured before the start of the study and every week thereafter until the 15 wk trial was over. Blood samples were obtained and plasma urea nitrogen, glucose, and beta-hydroxybutyrate (BHB) concentrations were determined prior to the start of treatment and weekly after until the conclusion of the study. Fecal samples were taken prior to treatment and every other week from each heifer for coccidia counts. Apparent total-tract nutrient digestibility was determined utilizing a chromium oxide marker. Each heifer underwent this phase at 47 d on study until 54 d on study. Sodium butyrate appeared ix to increase the digestibility of acid detergent fiber (ADF) and organic matter (OM) ( P = 0.08; P = 0.07, respectively). Sodium butyrate had a positive effect on average BW and overall BW gain. Sodium butyrate had no performance effects on skeletal growth or blood metabolites. Average daily gains were 1.16, 1.15, 1.17, and 1.24 kg/d (P = 0.12) and daily dry matter intakes (DMI) were 5.09, 4.84, 5.19, and 4.91 kg/d (P = 0.85) for CON, 0.25SB, 0.50SB, and 0.75SB, respectively. There was a trend towards improved feed efficiency (FE). Fecal samples from each heifer indicated the presence of coccidian, but the counts were variable within blocks and not consistent across heifers within each pen. There was a trend towards positive feed efficiency. Sodium butyrate supplementation offers positive results in the growth performance and feed efficiency of post-weaned heifers.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355627251Subjects--Topical Terms:

660421
Agriculture.
Index Terms--Genre/Form:

554714
Electronic books.

Supplementation of Sodium Butyrate to Post-weaned Heifer Diets : = Effects on Growth Performance, Nutrient Digestibility, and Health.
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520 $a The objective of this study was to determine the effect of varying levels of sodium butyrate (SB) on the growth, digestibility, and health of post-weaned heifers. Forty Holstein dairy heifers with a mean age of 84 d and average body weight (BW) of 100.88 kg were housed in a naturally ventilated freestall barn. Heifers were blocked by birth date and randomly assigned to 1 of 4 treatments in a completely randomized block design: (1) 100 g of soybean meal carrier (control; CON); (2) 0.25 g SB/kg of body weight + carrier (0.25SB); (3) 0.50 g SB/kg of BW + carrier (0.50SB); (4) (0.75 g SB/kg of BW + carrier ( 0.75SB). Treatments were top-dressed and hand-mixed into a total mixed ration (TMR) once daily. Heifers had free access to water. Initial BW, hip and withers heights, heart girth and body length were measured before the start of the study and every week thereafter until the 15 wk trial was over. Blood samples were obtained and plasma urea nitrogen, glucose, and beta-hydroxybutyrate (BHB) concentrations were determined prior to the start of treatment and weekly after until the conclusion of the study. Fecal samples were taken prior to treatment and every other week from each heifer for coccidia counts. Apparent total-tract nutrient digestibility was determined utilizing a chromium oxide marker. Each heifer underwent this phase at 47 d on study until 54 d on study. Sodium butyrate appeared ix to increase the digestibility of acid detergent fiber (ADF) and organic matter (OM) ( P = 0.08; P = 0.07, respectively). Sodium butyrate had a positive effect on average BW and overall BW gain. Sodium butyrate had no performance effects on skeletal growth or blood metabolites. Average daily gains were 1.16, 1.15, 1.17, and 1.24 kg/d (P = 0.12) and daily dry matter intakes (DMI) were 5.09, 4.84, 5.19, and 4.91 kg/d (P = 0.85) for CON, 0.25SB, 0.50SB, and 0.75SB, respectively. There was a trend towards improved feed efficiency (FE). Fecal samples from each heifer indicated the presence of coccidian, but the counts were variable within blocks and not consistent across heifers within each pen. There was a trend towards positive feed efficiency. Sodium butyrate supplementation offers positive results in the growth performance and feed efficiency of post-weaned heifers.
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