Intake and performance of confined crossbred heifers fed different lipid sources

Fiorentini, Giovani; Santana, Márcia Cristina Araújo; Sampaio, Alexandre Amstalden Moraes; Reis, Ricardo Andrade; Ribeiro, Andressa Ferreira; Berchielli, Telma Teresinha

doi:10.1590/s1516-35982012000600025

Cited by 11 publications

(7 citation statements)

References 34 publications

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“…Previous studies showed no effects of CS supplementation on ruminal pH (Fiorentini et al, 2012). Low ruminal pH inhibits cellulolytic bacteria, which produces great amounts of acetate (Boken et al, 2005).…”

Section: Discussionmentioning

confidence: 91%

Use of protected fat sources to reduce fatty acid biohydrogenation and improve abomasal flow in dry dairy cows

Bettero

Valle

Barletta

et al. 2017

Animal Feed Science and Technology

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The objective of this study was to evaluate the effects of dietary fat supplementation on dry dairy cows feed intake, digestion, ruminal kinetics, biohydrogenation, and abomasal flow of fatty acids (FAs). Eight Holstein rumen and abomasum fistulated dry cows (average body weight of 614 ± 59 kg), were assigned to a replicated 4 × 4 Latin square design experiment, with 21-d periods. The experimental diets were: 1) control (CON): corn-and soybean meal-based diet, with no fat source; 2) soybean oil (SO) diet with 30 g/kg dry matter (DM) of soybean oil; 3) whole raw soybean (WS) diet with 160 g/kg DM of whole raw soybean grain; 4) calcium salts of fatty acids (CS) diet with 32 g/kg DM of calcium salts of unsaturated FA. Fat-supplemented diets increased ether extract intake and digestibility without affecting DM intake. However, these diets promoted a decrease in DM and neutral-detergent fiber (NDF) total tract apparent digestibility. Fat sources decreased ruminal acetate to propionate ratio (C2:C3). In addition, SO diet increased ruminal propionate concentration and decreased C2:C3 in relation to protected sources of FA (CS and WS). Furthermore, cows fed CS diet exhibited higher ruminal pH, NH 3-N and acetate concentration compared to those fed WS diet. Fatty acid supplementation did not alter serum glucose and urea concentration, but increased the serum cholesterol concentration. Although FA supplementation increased net energy intake of cows, energy and nitrogen balances, and microbial protein synthesis were not affected by the experimental diets. Fat supplementation had no effect on ruminal digestion neither on DM and NDF passage rates. Cows fed CS and WS diets presented higher DM and NDF ruminal digestion rates whether compared to SO one. Consequently, cows fed CS and WS had higher truly digestible NDF ruminal removal rate than those fed SO. Calcium salts of unsaturated FA increased DM and NDF rumen passage rate and decreased

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Section: Discussionmentioning

confidence: 91%

Use of protected fat sources to reduce fatty acid biohydrogenation and improve abomasal flow in dry dairy cows

Bettero

Valle

Barletta

et al. 2017

Animal Feed Science and Technology

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“…Thus, heifers supplemented with varying levels of soybean oil forms under different feeding frequencies had similar BWs at slaughter and consequently similar LMAs. Fiorentini et al (2012b) reported similar values of LMA (35.45 cm 2 per 100 kg) for heifers finished with different lipid sources in a feedlot, which exceeded the minimum value of 29 cm 2 per 100 kg of carcass recommended by Luchiari Filho (2000) to indicate sufficient muscle development.…”

Section: Resultsmentioning

confidence: 50%

“…Other studies on the supplementation of animals with different lipid sources also reported no significant effects on carcass traits (Zinn et al 2000;Aferri et al 2005;Fiorentini et al 2012b). The mean dressing percentage of 51.05% reported herein was similar to those of other studies; for example, Fiorentini et al (2012b) reported a dressing percentage of 50.78% for one-quarter Nellore × one-quarter Santa Gertrudis × one-half Braunvieh heifers, which is considered typical and meets the standards of Brazilian markets (Eiras et al 2014).…”

Section: Resultsmentioning

confidence: 93%

Characteristics of carcass and meat of heifers finished on pasture amended with different supplement frequency and soybean oil source

et al. 2017

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“…Studies with confined animals have evaluated effects of lipid supplements on DMI. In Fiorentini et al (2012), a greater DMI was observed for heifers in confinement who received diets containing calcium salts of SO in comparison to animals fed soybean and pure SO. A possible explanation for this may be related to quality of the NDF of the forage, type and amount of roughage and forage : concentrate ratio.…”

Section: Table 4 Total Dry Matter (Tdmi) Supplement (Si) Herbage (mentioning

confidence: 94%

“…The use of supplements high in lipids to increase the diet's energy density has been shown to lead to satisfactory performance of finishing cattle (Fiorentini et al 2012). However, different sources of a particular ingredient in the diet, as well as feeding frequency, may affect rumen kinectics differently, possibly resulting in changes in DMI and ingestive behaviour.…”

Section: Introductionmentioning

confidence: 99%

Source and frequency of dry season lipid supplementation of finishing grazing cattle

et al. 2015

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The objective of this study was to evaluate the effects of sources of soybean oil [ground soybean (GS), soybean oil (SO) and calcium salts of soybean oil (CS)] on DM intake (DMI), ingestive behaviour and average daily gain (ADG) of heifers grazing marandu palisadegrass (Brachiaria brizantha cv. Marandu) supplemented in two frequencies [daily and 3 days a week (Monday, Wednesday and Friday -MWF)]. The experiment was conducted from July until November of 2007. Forty-two crossbred heifers (1/4 Nellore · 1/4 Santa Gertrudis · 1/2 Braunvieh), 17-months old and 297.1 kg AE 30.5 BW AE s.e.m., were used. Supplements were offered at 0.75% BW.day. Treatments were allocated in a completely randomised design and distributed in a factorial arrangement (3 · 2 -SO from three different sources and two supplementation frequencies). Total DMI was greater in August and October (2.2 kg DM/kg BW) than in November (1.5 kg DM/kg BW). There was an effect of SO source on total DM, herbage and nutrients intake, but no effects of supplementation frequency. The animals supplemented with SO had greater DMI (P < 0.05) than the ones fed GS and CS. Average daily gain (0.580 g) was not affected by supplement sources or feeding frequency. Therefore, GS and CS are more efficient supplements. Supplementation frequency altered grazing time differently according to source. The MWF treatment resulted in a decreased grazing time when GS and SO were fed. However, in days when supplements were not offered, grazing time was increased for GS and CS. It was concluded that a decreased frequency of supplementation may be implemented without effect on weight gain and will reduce labour and machinery costs.

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Intake and performance of confined crossbred heifers fed different lipid sources

Cited by 11 publications

References 34 publications

Use of protected fat sources to reduce fatty acid biohydrogenation and improve abomasal flow in dry dairy cows

Use of protected fat sources to reduce fatty acid biohydrogenation and improve abomasal flow in dry dairy cows

Characteristics of carcass and meat of heifers finished on pasture amended with different supplement frequency and soybean oil source

Source and frequency of dry season lipid supplementation of finishing grazing cattle

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