Morfologia dos pré-estômagos e de papilas ruminais de cordeiras Santa Inês em crescimento submetidas a dois planos nutricionais

Cavalcanti, Luigi Francis Lima; Borges, I.; Silva, Vandenberg L.; Silva, Fredson Vieira e; Sá, Hemilly Cristina Menezes de; Maciel, Isabella C. F.; Paula, Fabiane A.P.; Costa, Emmanuel H.O.

doi:10.1590/s0100-736x2014000400013

Cited by 7 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the ruminal physiology should also be accounted for, where the lambs may have a disproportional development of the forestomach in relation to their body size until 90 days old, as described by Cavalcanti et al (2014). These authors also reported that a fast growth of the forestomach occurs after weaning, where its mass increase follows the body development in a proportional way (isogonic growth).…”

Section: Resultsmentioning

confidence: 99%

Weaning and concentrate supplementation on the characteristics of carcass cuts and longissimus muscle of Suffolk lambs finished on pasture

Fernandes

Monteiro

Silva³

et al. 2021

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

The aim of this study was to evaluate the influence of weaning and concentrate supplementation on the characteristics of carcass cuts and longissimus muscle of Suffolk lambs finished on a Tifton 85 (Cynodon spp.) pasture. Weaning and concentrate supplementation strategies were evaluated in four finishing systems: i) non-weaned and non-supplemented lambs; ii) non-weaned lambs supplemented with concentrate in creep feeding; iii) weaned and non-supplemented lambs; and iv) weaned lambs supplemented with concentrate. In the systems with weaning, lambs were weaned at 46 ± 6 days of age. In the systems with supplementation, the concentrate was offered daily at 2% of lambs’ body weight. Weaning led to a decrease, whereas supplementation led to an increase in carcass cut weights. Supplemented lambs had lower yields of neck and uncovered ribs, and higher yields of breast + flank and loin. The characteristics of loin eye and fat thickness over the longissimus muscle presented lower values in weaned lambs and higher values in supplemented lambs. Keeping lambs with their dams and offering concentrate supplementation until slaughter are strategies recommended to obtain heavier cuts with increased muscularity and fat content.

show abstract

Section: Resultsmentioning

confidence: 99%

Weaning and concentrate supplementation on the characteristics of carcass cuts and longissimus muscle of Suffolk lambs finished on pasture

Fernandes

Monteiro

Silva³

et al. 2021

Acta Sci. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…The height, thickness and shape of the papillae depend on the energetic composition of the feed. For papilla-height growth to occur, a large demand for energy is required, which must be intake through the feed offered (Cavalcanti, 2014). As the inclusion of the ionophore provided a higher amount of propionate, it can be inferred that there was greater substrate availability for papillae growth.…”

Section: Rumen Morphometricsmentioning

confidence: 99%

>b<Use of narasin for lactating ewes and feedlot lambs>/b<

Sardinha¹

View full text Add to dashboard Cite

The objective of this project was to evaluate the supply of narasin on the performance of ewes and their lambs in the lactation phase (Exp. I) and feedlot lambs (Exp. II). Experiment I: Thirty-two ewes with ten days of lactation were used, together with their lambs (s). The experimental design was randomized complete blocks. The diets consisted of 50% hay and 50% concentrate. The treatments were defined by the no narasin inclusion (N0) or inclusion of 13 mg/kg DM of narasin (N13). The experiment lasted 70 days. The inclusion of narasin did not affect the ewe's DMI, however, milk production (P <0.01) and feed efficiency (FE; P = 0.02) increased. Ewes fed N13 had a greater fat (P <0.01), protein (P <0.01), lactose (P = 0.04) and total solids in milk (P <0.01). Narasin inclusion in ewe's diet increased blood glucose concentration (P = 0.05) at wk 8, 9 and 10. The lambs of N0 ewes had a greater starter DMI (P <0.01) at wk 7, 8, 9 and 10; however, the ADG and BW at weaning and after weaning were similar between treatments (P> 0.05). Experiment II: The objective of the study was to evaluate in inclusion of NDF contents and the inclusion of narasin on performance, carcass parameters, rumen fermentation and histology of the papillae in feedlot lambs. Forty-four lambs were confined in a tie-stall system. The experimental design used was a randomized blocks in a 2 x 2 factorial arrangement, with factor I being the use of 20 or 25% NDF (in DM) and factor II no narasin inclusion (N0) or inclusion of 13 mg / kg DM of narasin (N13). The experiment lasted 112 days. NDF levels in the diets did not affect the ADG. However, diet containing 25% NDF resulted in increase in lambs' DMI (P = 0.04) consequently, reduced the FE (P <0.01).Inclusion of 13 mg / kg DM of narasin increased SFT (P <0.01), BWT (P <0.01) and DMI (P = 0.04). The inclusion of 20% NDF resulted in increased BWT (P = 0.03) and perirenal fat weight (P = 0.05). The narasin reduced protein content (P = 0.02) and increased ether extract (EE) (P <0.01) of the meat. There was interaction between the NDF contents and the inclusion of narasin on the molar proportion of propionate (P = 0.02), and the acetate-to-propionate ratio (P <0.01). Inclusion of narasin reduced the molar ratio of acetate (P <0.01), increased ruminal pH (P = 0.05) and total SCFA concentration (P <0.01), propionate molar ratio (P = 0.02), the acetate-to-propionate ratio (P = 0.03) on the cecal fermentation. Diets containing 25% NDF and the diets containing narasin resulted in histological changes in the papillae.

show abstract

Ruminal and morphometric parameters of the rumen and intestines of sheep fed with increasing levels of spineless cactus (Nopalea cochenillifera Salm-Dyck)

Lima

Costa

Medeiros

et al. 2018

Trop Anim Health Prod

View full text Add to dashboard Cite

The objective of this study was to evaluate the ruminal parameters (pH, N-NH and microbial protein) and morphometry of the rumen and intestine of sheep fed with a diet containing four different levels of the spineless cactus variety, Baiana. The experiment was conducted at the National Semi-Arid Institute in Campina Grande, PB, Brazil. A total of 40 male sheep submitted to the confinement regime were used in a completely randomized design with four treatments (0, 15, 30, and 45% dry matter basis) and ten replicates, with an initial body weight of 23.7 ± 3.08 kg. Experimental diets were composed of ground corn, soybean meal, urea, mineral supplement, limestone, Tifton 85 hay, and spineless cactus of the Baiana variety. The pH, ammonia nitrogen, and microbial protein were evaluated in the ruminal fluid, alongside the morphometric characteristics of the rumen and intestine. While the addition of the spineless cactus did not affect N-NH, it caused a linear reduction in the ruminal pH following 4 h of feeding, and also increased the microbial protein. In addition, it stimulated a reduction in the height of the papillae and the muscle layer of the rumen, and induced the mucosal height in the intestine to increase. The addition of up to 30% of spineless cactus in the diet of sheep without a defined breed did not alter the N-NH, pH, and ruminal histology, but it did increase the production of microbial protein and intestinal mucosa.

show abstract

Morfologia dos pré-estômagos e de papilas ruminais de cordeiras Santa Inês em crescimento submetidas a dois planos nutricionais

Cited by 7 publications

References 14 publications

Weaning and concentrate supplementation on the characteristics of carcass cuts and longissimus muscle of Suffolk lambs finished on pasture

Weaning and concentrate supplementation on the characteristics of carcass cuts and longissimus muscle of Suffolk lambs finished on pasture

>b<Use of narasin for lactating ewes and feedlot lambs>/b<

Ruminal and morphometric parameters of the rumen and intestines of sheep fed with increasing levels of spineless cactus (Nopalea cochenillifera Salm-Dyck)

Contact Info

Product

Resources

About