Maize supplementation of Pelibuey sheep in a silvopastoral system: fodder selection, nutrient intake and resilience against gastrointestinal nematodes

AbstractBecause of the natural adaptation of Mexican sheep, the aim of the present study was to identify the presence or absence of gastrointestinal parasitic nematodes (GIN) resistant to benzimidazole (BZ) in both Chiapas and Pelibuey sheep breeds on local farms. Both male and female GIN-infected grazing sheep of the two breeds were selected. Sheep faecal samples were collected to obtain infective larvae (L3). This evolving stage of the parasite was used for taxonomic identification of the genus, based on its morphological characteristics. BZ anthelmintic resistance was evaluated using a nematode–compound in vitro interaction bioassay and the allele-specific polymerase chain reaction technique to detect mutations of residues 198 and 200 on isotype 1 of the β-tubulin gene. Three BZ-based compounds (febendazole (FBZ), tiabendazole (TBZ) and albendazole (ABZ)) at concentrations of 1, 0.5, 0.25, 0.125, 0.062 and 0.03 mg/ml were used to estimate the anthelmintic efficacy and lethal dose (LD50, LD90 and LD99) of the drugs. Two parasitic nematodes, Haemonchus and Teladorsagia, were identified in both isolates. Also, the proportions of anthelmintic resistance identified in GIN of the two sheep breeds were 68% in isolates from the Chiapas breed and 71.8% in the Pelibuey breed. The specific lethal activity obtained with FBZ was higher than 90%. However, TBZ and ABZ showed a lethal activity lower than 50%. High variability in the discriminating dose values was found among the BZ drugs. For example, FBZ LD ranged from 0.01 to 1.20 mg/ml; on the other hand, TBZ and ABZ required a dose ranging from 0.178 to 759 mg/ml. In addition, amino acid changes of Phe (TTC) to Tyr (TAC) at codon 200 of the β-tubulin gene, showing resistance to BZ, and no changes at codon 198 Glu (GAA) to Ala (GCA) were observed for both isolates. These results confirmed the presence of a genetic mutation associated with BZ in both Chiapas and Pelibuey nematode isolates.

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Immune and parasitic response to conjugated linoleic acid in the diet of pelibuey sheep infected with gastrointestinal nematodes

Italian Journal of Animal Science ◽

10.1080/1828051x.2021.1988875 ◽

2021 ◽

Vol 20 (1) ◽

pp. 1935-1946

Author(s):

Gerardo Jiménez-Penago ◽

Omar Hernández-Mendo ◽

Roberto González-Garduño ◽

Glafiro Torres-Hernández ◽

Lorenzo Danilo Granados-Rivera

Keyword(s):

Linoleic Acid ◽

Conjugated Linoleic Acid ◽

Gastrointestinal Nematodes ◽

Pelibuey Sheep

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Reproductive behavior of crossbred dairy cows grazing an intensive silvopastoral system under tropical dry forest conditions

Arquivo Brasileiro de Medicina Veterinária e Zootecnia ◽

10.1590/1678-4162-8712 ◽

2017 ◽

Vol 69 (1) ◽

pp. 1-9

Author(s):

E. Sierra-Montoya ◽

R. Barahona-Rosales ◽

Z.T. Ruiz-Cortés

Keyword(s):

Dairy Cows ◽

Reproductive Performance ◽

Reproductive Behavior ◽

Nutrient Intake ◽

Dry Matter ◽

Dry Forest ◽

Ovarian Activity ◽

Silvopastoral System ◽

Group 2 ◽

Group 1

ABSTRACT It is widely accepted that selection for high milk yield in dairy cows has negatively affected their reproductive performance. After calving, dairy cows experience a nutritional imbalance due to an asynchrony in the occurrence of the lactation and dry matter intake peaks. In the tropics, this situation is exacerbated due to poor quality and/ or availability of the diet. A study was carried out to describe the nutritional and reproductive behavior of two-to-four parturition crossbred cows (Gyr (Bos indicus) x Holstein (Bos taurus)) divided in two groups according to their calving to first service interval (CFSI): Group 1: ≤50 days CFSI, n=7; Group 2: ≥50 days CFSI, n=8. Animals were grazing in an intensive silvopastoral system (ISS) based on Leucaena leucocephala and Cynodon plectostachyus and also received protein, energy and mineral supplementation. Dry matter (DMI) and nutrient intake were individually estimated and correlations between reproductive and nutritional parameters were performed. Additionally, serum progesterone concentration was monitored. Group 2 had greater forage and total DMI and milk production than Group 1 (P<0.05). Hence, Group 2 had greater nutrient intake from forages than Group 1 (P<0.05). Group 1 had a positive nutritional balance and an optimum reproductive performance compared to Group 2, which had a negative energy balance and lengthier days with open intervals (P<0.05). It was corroborated that protein and energy are required in adequate levels, to ensure that uterus undergoes involution correctly and ovarian activity starts soon in the postpartum period.

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Immune response related to Pelibuey sheep naturally infected with gastrointestinal nematodes in a tropical region of Mexico

Veterinary Parasitology Regional Studies and Reports ◽

10.1016/j.vprsr.2020.100422 ◽

2020 ◽

Vol 21 ◽

pp. 100422

Author(s):

Jocelyn Maza-Lopez ◽

Martha Janeth Pacheco-Armenta ◽

David E. Reyes-Guerrero ◽

Agustín Olmedo-Juárez ◽

Roberto González-Garduño ◽

...

Keyword(s):

Immune Response ◽

Gastrointestinal Nematodes ◽

Tropical Region ◽

Pelibuey Sheep

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Influence of Maternal Education on Food Consumption and Energy and Nutrient Intake in a Group of Pre-School Children from Madrid

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831.73.6.439 ◽

2003 ◽

Vol 73 (6) ◽

pp. 439-445 ◽

Cited By ~ 9

Author(s):

Navia ◽

Ortega ◽

Requejo ◽

Perea ◽

López-Sobaler ◽

...

Keyword(s):

Food Consumption ◽

School Children ◽

Food Habits ◽

Nutrient Intake ◽

Maternal Education ◽

Statistical Significance ◽

Dietary Adequacy ◽

Consumption Energy ◽

Maternal Educational Level ◽

Energy And Nutrient Intake

A study was conducted on the influence of maternal education level on food consumption, energy and nutrient intake, and dietary adequacy in 110 pre-school children from Madrid, Spain. With increasing maternal education, children consumed more sugar (p < 0.05), fruit (p < 0.05), and fish (p < 0.05). Snacking was more frequent with decreasing maternal education (p < 0.05). Though statistical significance was not reached, the consumption of pre-cooked foods was greater among children of mothers educated to a higher level, a phenomenon probably related to the work situation of these women. With respect to dietary composition, no significant differences were found between groups for macronutrient, fiber and energy intakes, except for energy supplied by polyunsaturated fatty acids (PUFA), which was greater in the children of less educated women (p < 0.01). This is probably due to their greater consumption of sunflower seed oil. The diets of children belonging to well-educated mothers came closer to meeting the recommended intakes for folate, vitamin C, and iodine. It would seem that maternal educational level influences the food habits of children. Mothers with less education may require special advice in this area.

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Trends in Dietary Intake of Vitamins A, C, and E in German Children and Adolescents – Results of the DONALD Study

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831.73.5.335 ◽

2003 ◽

Vol 73 (5) ◽

pp. 335-342 ◽

Cited By ~ 6

Author(s):

Alexy ◽

Kersting ◽

Sichert-Hellert

Keyword(s):

Vitamin E ◽

Nutrition Education ◽

Time Trends ◽

Nutrient Intake ◽

Age Groups ◽

Food Groups ◽

Fortified Food ◽

Vitamin Intake ◽

Dietary Records ◽

The Impact

Intake of vitamins A, C, and E was evaluated and age and time trends were assessed on the basis of 3-day weighed dietary records (n = 5121) of 2- to 18-year old boys (n = 417) and girls (n = 425) enrolled in the DONALD Study (Dortmund Nutritional and Anthropometric Longitudinally Designed Study) 1986–2001. Intake of vitamin A remains stable over time, intake of vitamin C increases linearly, and intake of vitamin E follows a nonlinear trend. Age trends of vitamins A and C (per MJ) were nonlinear with a minimum at the beginning adolescence, while intake of vitamin E (per MJ) increased linearly. Girls had higher nutrient densities but lower intakes expressed as percent of reference values. Fortified food in total had a higher impact on time trends of nutrient intake than other single food groups defined here. Our results point to the impact of the food industry on long-term nutrient intake, but also underline the necessity of nutrition education even in young age groups to improve vitamin intake.

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The Relationship Between Antioxidant Nutrient Intake and Cataracts in Older People

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831.76.6.359 ◽

2006 ◽

Vol 76 (6) ◽

pp. 359-366 ◽

Cited By ~ 11

Author(s):

Rodríguez-Rodríguez ◽

Ortega ◽

López-Sobaler ◽

Aparicio ◽

Bermejo ◽

...

Keyword(s):

Vitamin C ◽

Older People ◽

Dietary Intake ◽

Protective Effect ◽

Elderly People ◽

Nutrient Intake ◽

Institutionalized Elderly ◽

Weighing Method ◽

The Relationship

This study investigated the relationship between the intake of antioxidant nutrients and the suffering of cataracts in 177 institutionalized elderly people (61 men and 116 women) aged ≥ 65 years. Dietary intake was monitored for 7 consecutive days using a "precise individual weighing" method. Subjects, who during their earlier years were exposed by their work to sunlight, had a greater risk of suffering cataracts (OR = 3.2; Cl: 1.1–9.3, P < 0.05) than those who worked indoors. A relationship was found between increased vitamin C intake and a reduced prevalence of cataracts (i.e., when comparing those above P95 for vitamin C intake with those below P5; (OR = 0.08; Cl: 0.01–0.75, P 0.05). Among subjects with cataracts, 12.1% had vitamin C intakes of < 61 mg/day (P10) and only 2.2% had intakes of > 183 mg/day (P95) (p < 0.01). Subjects who consumed > 3290 μg/day (P95) of lutein were less likely to have cataracts (OR = 0.086; Cl: 0.007–1.084; p < 0.05) than those whose consumption was < 256 μg/day (P5). In men, high intakes of zeaxanthin seemed to provide a protective effect against the problem (OR = 0.96; Cl: 0.91–0.99; p < 0.05). The results suggest an association exists between exposure to sunlight and the development of cataracts, and that vitamin C, lutein, and zeaxanthin offer some protection against this disorder.

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